Manufacture of solid, soluble beverage extract



O. ROEWADE. MANUFACTURE OF SOLID, SOLUBLE BEVERAGE EXTRACT.

APPLICATION FILED MAR. 8| 19I8.

Patented Jan. 25,1921.

OGIJ ROEWADE, or BATTLE cnnnx, MICHIGAN,

ASSIGNOR, BY MESNE ASSIGNMENTS,

'I. O POSTUM CEREAL COMPANY, INC,, OE WILMINGTON, DELAWARE, AOORPORA- TION OF DELAWARE.

:mmurecrunn or $01.11), SOLUBLE BEVERAGE nx'rascr.

To all whom it may concern Be it known that I, Ocn RoEwAnE, a c1t1- 'zen of the United States of America, and a resident of Battle Creek, Michigan, have invented a new and useful Improvement in I the Manufacture of. Solid, Soluble Beverage over the operation an Extracts, which invention is fully set forth starch-containing cereals, sugar and the like,

and more particularly to improvements in the method of extracting the soluble constituents from said materials, whereby more rapid and complete extraction mayrbe'secured, and economy in heat, time and labor effected, while givin the proper control improving the flavor of the product.

Heretofore, roasted carbohydrate mixtures adaptedfor the'preparation of solid Y or lessimpervious. mass which renders pertemperature, packs ormats the bran tosuch beverage-extracts, such as the mixture of roasted wheat and roasted molassescoated bran described in U. S. patent to Post No.

1,031,962, have been extracted by percolating or by boiling the mixture in water, separating the fluid extract from the insoluble mass, andevaporating said extract to dryness. Furthermore-roasted bran and caramelized saccharine matter have been extracted; roasted grain also extracted; 1 the separate extracts united and evaporated recover the solid soluble extracts;

hen the grain is treated as in percolating, especiallyiat ,a boiling temperature, in

the presence of bran, there is formed a more colation, and hence extraction, slow an d difl ficult. The boilirfg, or percolating at high I an extent as to retard the freepas'sage theres throughof the water solgvent, and this con; 7

ywater to a higher temperaturethan would otherwise be necessary for its extractlon.v

sumes time in the percolation and wastes heat inraisingga large mass of bran and When the bran and caramelized saccharine body are extracted separately from the grain, the extraction ofrthe materials by separate portions of solvent necessitates the evaporation of too large an amount of water at the "expense of time and fuel to extract.

obtain the dry,

caramelized saccharine material,

i Specification of Letters Patent. Patented J an, 1921 Application filed March 8, 1918. Serial No. 221,315.

I have discovered that the above objecsame materials, while improving the flavor .of the product, by separately cooking the roasted cereal with water, and then mlxing the cooked cereal with the roasted bran and preferably adding more water tothe mixture, digesting water) the mixture at a temperature preferably below that at which the roasted cereal was cooked, separating the liquid extract,

and recovering the solid soluble material applied to the preparation of a solid soluble evera'ge extract from roasted wheat, roasted bran and caramelized molasses, though it is (z'. e.-, subjecting to the action of heat and to be understood that the invention maybe i applied to making solid beverage'extracts from other cereals and saccharine subleans molassspand 250 'ounds "of wheat,

may use 3 parts give excellent results; or by weight of roasted molasses-coated bran to one part of roasted wheat.

My invention consists in first roasting the wheator equivalent cereal to effect the dextrinizing of the starchy contents thereof; roasting themol'asses-coated bran whereby the saccharine matter offthemolasses is caramelized and certain of the solids of the bran rendered readily soluble; and then, be-

fore mixing the roasted cereal with the roasted '.bran and caramelized saccharine body, cooking the roasted cereal, preferably in a finely groundcondition. This I accompli'sh by cooking the roasted cereal (bemay be somewhat varied,-

, fore mixing it with the roasted -bran and caramelized saccharine body) by subjecting it to heat and moisture. After the roasted cereal "has thus been cooked, the entire mass -1 carried on after thecookingof the cereal,

the matting orpacking ofthe bran which results from the em loyment of 'a higher temperature is avoi(i ed,'thus maintaining the mass in a-more open and porous condition, and facilitating the rapid'extraction. While any suitable form of. apparatus may be employed forcarrying out the process,

one such form is diagrammatically shown in the accompanying drawing, in whicha 1 is a steam-jacketed, closed cooker, preferably in the form of a cylindrical vessel rovided with a stirring device 2. A weigh- .ing feed hopper 3 for roasted grain delivers into the top of the cooker 1, and a dis-. charge pipe 4; controlled by a gate valve 5 leads from the bottom of the cooker 2 into the top of a closed steam-jacketed percolatingtank 6-provided with a perforated false bottom 7. A weighing hopper 8., preferably located'in a plane above the percolating tank 6,. is provided for weighing the roasted molasses-coated bran, and this hopper delivers, through the pipe 9, .into the tank 6. Leading out of the bottom of the tank 6 is a pipelO controlled by a valve 11,'and' this pipe is provided with an extract-observation device 12, whereby the character of theextract delivered from the tank 6 can be observed. A pipe having a valve '15 connects this observation device 12 with a pump 14:, which 'pump delivers through 'a i-pipe 13 into the upper portion of the percolating tank 6, so that the fluid from the bottom of the tank 6 can be pumped through the p1pes 10and13 and the observation de- 1 vice 12, and delivered to again pass throu h the nfaterial in the percolating tank. Wit in the tank 6 aresuitable stirring blades '16, and a sprayer 17 for-supplying water, the

temperature of 'which is controlled by any suitable means such as a thermosensitivecontrolled hot and cold mixer 18, of any ordinary or well-known construction. A pipe 19 1s provided for discharging the residue or grounds at the close of the opera tion, after the fluid extract hasbeen withdrawn from the peroolator. A storage tank 2'1 is provided for the temporary reception of a clear percolate entering therein through 66 pipe 20, which is a branch of pipe 22 comin peroolator 6, and water through the municating with pipe l0, preferably through the percolateobservation device 12, pipe 20 being controlled by a' valve 133 and the pipe 22 by a valve 31. The percolate storage tank 21 is connected to an evaporator 23 by a suitably valved pipe 24, and the evaporator 23 in turn communicates through a suitable pipe, preferably -leading from the bottom thereof, with a vacuum drum drier 25 of the usual or any suitable construc tion. A second storage tank 26 is provided into which the ipe 22 delivers through a branch 20' contro led by a valve 32, and a pipe line 27 leads from the bottom of this storage tank'26 tothe upper portion of the steam cooker 1, a pump 28 being interposed in the pipe' line 27. Suitable power-driven stirrers 29 and 30 are located respectively in the tanks 26 and 21.

In carrying out the process and treating, for example, roasted bran and molasses, and roasted wheat, indicated above, the roasted wheat, preferably in a finely ground condition, is Tun from the weighing hopper 3 into the cooker 1, and for each 100 pounds of roasted wheat about 50- to 60 gallons of waterare supplied to the cooker. This may be ordinary water, in which case it is supplied through the pipe27, or, preferably, it is percolate wash water from a previous operation, in whichcase it is supplied to the cooker from the tank 26 through .the pipe 27. The mass is then subjected to the action of heat for a suitable length of time. Preferably, it is maintained at approximately 212 F. for about 5 minutes by steam introduced into the steam-jacket of the cooker, while the mass is stirred by the stirrer 2. In the meantime, roasted molasses-coated bran is weighed from the hopper 8into the peroolator 6. The gate valve 5 is then opened and the cooked mass is" delivered through the pipe 4 onto the bran 'sprayer'l7 is introduced to cover the mass, the height beingfiindicated by a suitable gage, and the stirrers 16 -set in operation. The temperature of the charge in the peroolator 6 is kept lowerlthan in the cooker, preferably from about 180 to-195 F., the object being to utilize the requisite amount of heat for extracting the desired co'nstitu ents of the bran portion while avoiding per- ,colating diiiiculties such as packing of the bran, which usually occurs when the bran is, subjected to a higher cooking temperature. 1 After the mass is thoroughly stirred, it is allowed to subside-.for approximately 30 minutes, at the end of which time valves 11 and 15 in the percolate circulating conduit 10-13 are opened, communication with the tanks 21 and 26 being cut off by valve percolator 6 may be drained directly therefrom into the percolate storage tank 21, from which it is delivered to the evaporator 23 Where it is partially evaporated, and then to the drum evaporator 25. y

In order to obtain any residue of extractive material still remaining in the mass of grounds or residue of Wheat and molassescoated bran in the percolator, this mass of residue is sprayed with water (after the valve 33 is closed, so as to cut oflf the percolating tank 6 from the storage tank 21) and if desired, the proper valves may be opened and the pump 14 started to pass the spraywater through the pipes 10 and 13 and pass.

it again through the mass, though this is not essential. Valve 15 being closed, and the valve 32 being opened, this wash-water or Weak percolate is then directed into .the percolate washing tank 26 through pipes 10, 22 and branch pipe 20. The Wash-Water is supplied for this purpose at a preferred temperature of about 180 to 195 F. by the hot and cold water mixer 18 through the sprayer 17. All ofthe weak percolate or percolate washings having been withdrawn 27 is then delivered into the percolator, and the o eration repeated.

Prefera ly, the evaporation of the perco- ,late to secure a solid, soluble product is performed in 'vacuo, as described in U. S. patent to Post No. 1,031,962, though the evaporation to a solid may be carried out in other ways, the particular method of evaporation employed not forming an essential part of this invention.

By this process the amount of solid soluble extract obtained from a given amount of starting materials is increased, the cost of the operation is decreased, and the solubility and flavor of the resulting product in no Way impaired.

What is claimed is 1. The process which consists in first cooking roasted cereal in Water to form a fluid, mixture, then mixing said cooked-mass with roasted bran and caramelized saccharine matter, digesting this mixture after an addition of water whereby a fluid extract of the mass is obtained, and then draining off the said extract and recovering the soluble matter therefrom by evaporation.

2. The process specified in claim 1 characterized by the use of roasted wheat, roasted bran and caramelized molasses as the materials.

'3. The rocess specified in claim 1 characterized by washing the mass with water after draining oil? the fluid extract and usin anot er portion of roasted cereal forrepeating the process of extraction.

4. The process specified in claim 1, characterized by digesting the mixture of cooked cereal, roasted bran and caramelized saccharine matter at a temperature below that employed for cookin the cereal.

In testimony w ereof I have signed this specification.

OGE. ROEWADE.

the Wash water in which to cook 

